| 甘薯茎基部腐烂病病原鉴定及药剂防控试验 |
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| 引用本文： | 刘伟明,刘也楠,何贤彪,黄立飞. 甘薯茎基部腐烂病病原鉴定及药剂防控试验[J]. 农学学报, 2019, 9(12): 9-16. DOI: 10.11923/j.issn.2095-4050.cjas20190800164 |
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| 作者姓名： | 刘伟明 刘也楠 何贤彪 黄立飞 |
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| 作者单位： | 1.台州科技职业学院;2.台州市农业科学研究院;3.广东省农业科学院作物研究所 |
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| 基金项目： | 浙江省农业（粮食）新品种选育重大科技专项“甘薯、山药种质筛选及新品种选育”(2016C02050-7-3)；台州市农业类重点科技项目“甘薯根 茎部腐烂病害的病原菌鉴定、发生危害规律及防控技术研究”(1701ny12)；国家现代农业（甘薯）产业技术体系“鲜食型甘薯改良岗”(CARS-10-C-17)、 “广州综合试验站”(CARS-10-B-4)；2017 年广东省级农业发展与农村工作专项“优质抗逆加工专用甘薯新品种创制及应用”。 |
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| 摘 要： | 为有效防控大面积发生的甘薯茎基部腐烂病,于2015-2018年在浙江省11个县市区的51个村(甘薯病区)采集到127份甘薯茎基部腐烂病病样,进行病原菌分离鉴定,结果发现主要有8种致病菌,即达旦提狄克氏菌、齐整小核菌、拟轮枝镰孢菌、腐皮镰刀菌、尖镰刀菌、甘薯间座壳菌、毁坏性拟茎点霉和爪哇镰孢,不同地区间致病菌组成分布均有所不同,并且病样普遍为多种致病菌复合侵染危害。2016-2018年连续3年的药剂防控试验显示,使用多菌灵,或多菌灵加代森锰锌、多菌灵加农用硫酸链霉素混合液防控甘薯茎基部腐烂病有明显效果,但使用浓度应比其推荐浓度高,尤其是多菌灵,50%多菌灵使用浓度不宜大于300倍,其100倍浓度的防控效果会更好些。
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| 关 键 词： | 大豆亲本 大豆亲本 杂种优势 分子标记 遗传距离 相关性 杂种优势预测 |
| 收稿时间： | 2019-08-21 |
Stem Base Rot of Sweet Potato: Pathogen Identification and Prevention and Control Test of Agentia |
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| Abstract: | To prevent and control the large-scale stem base rot of sweet potato, 127 samples of stem base rot were collected from 51 villages (disease areas) in 11 counties and urban areas of Zhejiang during 2015-2018, and the isolation and identification of pathogen and the prevention and control test of agentia were carried out for 3 consecutive years (2016-2018). The results showed that: there were 8 identified pathogens, including Dickeya dadantii, Sclerotium rolfsii, Fusarium verticillioides, F. solani, F. oxysporum, Diaporthebatatas, Phomopsis destruens and F. javanicum, and the composition and distribution of pathogenic bacteria varied in different areas, and the disease samples were generally caused by multiple pathogenic bacteria. The prevention and control test of agentia showed that: the utilization of carbendazim or carbendazim combined with mancozeb and carbendazim combined with streptomycin sulfate had obvious effects on prevention and control of stem base rot of sweet potato, but the application concentration should be higher than recommended, especially the application concentration of carbendazim 50%WP should not be more than 300 times, and the effect was better when the application concentration was 100 times. This study identifies the pathogenic bacteria of stem base rot of sweet potato, and determines the agentia types and concentrations for prevention and control the disease. |
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